The examples of luminaires include radio frequency (RF) circuitry, an antenna, a light source and a housing. The radio frequency circuitry is configured to emit or receive RF signals. The antenna is coupled to the RF circuitry and located at a back wall of the housing opposite a housing output aperture. The light source may be located at a housing perimeter closer in proximity to the output aperture. The light source may be configured to emit light for general illumination of a space. The housing encloses an RF radiation transparent volume substantially free of RF radiation interfering materials. The volume may extend from the antenna to the housing output aperture. Examples also include an RF transparent reflector to reflect light emitted by the light sources. Light and RF radiation may pass through the RF transparent volume and the housing output aperture.

The invention relates to an explosion-proof luminaire (1) comprising a luminaire housing (2), at least one light source (3) arranged in the luminaire housing (2), a reflective device (4) assigned to the light source (3) for deflecting light emitted by the light source (3) in the direction of a light exit opening (5) in the luminaire housing (2) and a cooling device (6) assigned to the light source (3) and/or the luminaire housing (2). In particular, an inner side (7) of the luminaire housing (2) is formed, at least pointwise, as a reflective device (4) and/or the cooling device (6) is formed in one piece with the luminaire housing (2).

A lighting device may be provided according to the embodiment of the present invention. The lighting device according to the embodiment of the present invention includes: a light source which includes a substrate including a top surface and a bottom surface, a plurality of light emitting devices disposed in a central portion of the bottom surface of the substrate, and an input/output portion disposed in an edge portion of the bottom surface of the substrate and electrically connected to a wire; and a body which is coupled to the substrate of the light source and includes an opening through which light from the plurality of light emitting devices of the light source passes. The body includes an inner surface which defines the opening. The body includes a cover portion which is disposed on the inner surface of the body and covers the input/output portion of the light source and the wire.

A light source module is provided. The light source module includes a lead frame, a light source, a cup part, and a reflector. The light source is disposed on the lead frame, wherein the light source provides a light. The cup part is disposed on the lead frame, wherein the cup part includes an opening, a plurality of thick-wall portions and a plurality of thin-wall portions. The thick-wall portions and the thin-wall portions surround the light source and define a space. The reflector covers the opening. At least a portion of the light is reflected by the reflector, and is emitted through the thick-wall portions and the thin-wall portions.

Apparatus and methods for lighting are provided. The apparatus may include a lighting assembly. The lighting assembly may include a radius. The lighting assembly may include a light-emitting diode (LED) light source. The LED light source may include an LED. The apparatus may include a heat sink. The heat sink may be configured to retain the lighting assembly. The lighting assembly may be configured to emit light from an aperture. The aperture may be included in a structure. The aperture may include a radius. The lighting assembly may be configured to tilt relative to the structure. The lighting assembly may be tilted by insertion of an item through the aperture. The difference between the lighting assembly radius and the aperture radius may be between 0.075 inches and 0.25 inches.

Apparatus and methods for lighting. The apparatus may include a removable recess lighting assembly. The lighting assembly may include a light-emitting diode (LED) light source. The LED light source may include an LED. The lighting assembly may define a central axis. The apparatus may include a heat sink. The heat sink may be configured to be mounted in a structure. The heat sink may be configured to retain the lighting assembly. The heat sink may be configured to release the lighting assembly in response to a translation of the lighting assembly along the central axis. The translation may be a translation without a rotation of the light assembly about the central axis. In operation, the lighting assembly may be serviced without causing damage to the structure in which the apparatus is mounted. The lighting assembly may be removed through a defined aperture in the apparatus.

Various arrangements for light distribution incorporated as part of a device are presented. A circular light guide may be used that receives light from a plurality of light emitters that can be arranged in a circular pattern. A conical reflector may be used and may be positioned to reflect light emitted from the circular light guide onto an exterior of a case of the device. The conical reflector may reflect light such that light is reflected by the exterior of the case in the shape of a halo into an ambient environment of the device.

A lighting device comprises a carrier having a radially outwardly facing mounting surface and an inner cavity radially within the outer mounting surface. Solid state lighting devices are mounted on the outer mounting surface and a driver is housed in the inner cavity. A ring shaped optical unit defines a light output region of the lighting device and is mounted around the carrier. An outer housing reflects light from the arrangement of solid state lighting devices to the ring shaped optical unit. This provides a compact arrangement, in which the driver, the heat sink (implemented by the carrier), and the solid state lighting arrangement are essentially in a plane. This is possible by providing a ring of light sources facing radially outwardly, with the driver mounted radially inside the ring. The radial light output is converted to a light output with a desired direction and beam shape by the optical unit.

A light source includes a circular light element having a light source diameter, and a reflector disposed at least partially within the circular light element, the reflector having a first end with a first diameter and a second end with a second diameter, wherein the first diameter is less than the light source diameter and the second diameter is larger than the light source diameter, the second end having a plurality of slits.

An LED illumination module is described, where a row of LED elements (1) is arranged via a substrate (16) on a secondary cooling element (2). The secondary cooling element (2) can consist of a first material layer (16, 17) of copper and a second material layer (18) of aluminium. In such material combinations, phononic refraction leads to a good lateral heat distribution, which improves the heat flow and reduces temperature gradients. Alternatively or in addition thereto, the secondary cooling element (2) can be equipped with heat pipes. The LED elements (1) are electrically contacted by means of a current supply member (21) arranged at a distance from the substrate (16).